Method of forming roofing-strips



F. C. OVERBURY.

METHOD OF FORMING ROOFING STRIPS.

APPLICATION FILED 1.24, I916.

1 ,345,099. Patented June 29, 1920.

" UNITED STATES. PATENT OFFICE...

FBEDE'BICK G. OVEBBURY, 0F RUTHERFORD, NEW JERSEY, ASSIGNOR TO FLINTKOTE MANUFACTURING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF NEW JERSEY.

METHOD OF FORMING ROOFING-STRIPS.

Specification of Letters Patent. Pate nted June 29, 1920.

Application Hed Inch 24, 1910. Serial No. 86,457.

To all whom it may concern:

Be it known that I, FREDERICK C. Ovnn- BURY, a citizen of the United. States, residing in the city of. Rutherford, county of Bergen, and State of New Jersey, have invented certain new and useful Improvements in Methods of Forming. Roofing- Strips, of which the following is aspecification.

This invention relates to improvements in flexible roofing strips and method of form ing same and refers more particularly to roofing strips of any prescribed length made from a sheet. of abnormal width. The invention concerns more particularly that type of flexible roofing in which the fabric base or foundation is saturated or coated with a bituminous adhesive which in turn is covered with a grit or granular facing of predetermined character.

' The active growth of roofing strips in which an edge of the strip is ornamented by cutting notches and tabs'on one configuration or another is relatively recent. The demand for a roofing of this character is, however, constantly increasing. The margin of profit to the manufacturer on many kinds of roofing is relatively so small that economy in manufacture is vitally important. It is also important particularly, when the goods are sold in rolls, that the tabs or notched edges do not become in an wise bent or injured.- It is also highly esirable that the notches be of such character and size that they can be readily made by machinery which will stand the wear andtear incident to the manufacture of this character of goods, accordingly, it is in many instances desirable that short knives be used. At the same time it is essential that all of-any given sheet of roofing be converted into strips of the same configuration. The purpose of the this purpose.

present invention. is to attain the foregoing objects.

I am aware that heretofore various forms of roofing strip blanks havebeen made and that various methods have been devised for As far as I am aware, however, the present invention is novel.

In the drawin s Figure 1 is a rag mentary plan view of a roofing strip of abnormal width notched or cut in accordance with the present invention I Fig. 2 is a perspective view, part broken away, of a roll ofdouble width roofing strips made in accordance with the present invention;

Fig. 3 is a section of roofing shown in 2 before it is rolled; I igs; 4 and 5 respectively, show shingle strips made from the blanksshown in Fig. 1.

Referring to the drawings- 1 designates a roofing sheet preferably consisting of a fabric backing or foundation saturated or coated with a bituminous adhes'ive binder and covered with a granular or gravel facing of a desired character. The roofing sheet after being prepared as last described is fed through a suitable cutting machine equipped with knives or other suitable cutters for forming on one original edge notches 2 and the intermediate notches 3. The rows of notches are symmetrically arranged and each notch it will be noticed is of the exact length required for the vfinished shingle strip. As the roofing sheet is fed. through the forming machine the notches 2.

have obviously one open end and one closed I end while the notches 3 are closed end notches. Either before or after, or simultaneously with the forming of the notches, the roofing sheet is cut longitudinally along the lines 4-4. If it is desired to package the roofing strip as shown in Fig. 2 the .roofing sheet is completely cut along one 017.

the longitudinal lines 4, and may also be completely cut or partially out along the intermediate line 4. In other words, the two roofing strips shown in Fig. 2 may be completely or partially severed as desired. If it is desired to form a shingle strip such as shown in Fig. 4 the blank is out along the transverse line 55, with lines extending from the center of the ends of the notches as shown more clearly in Fig. 1. If it is desired to form longer strips such as shown inFig. 5, the sheet is cut transversel along the lines 6-6, these lines then exten ing likewise from the center of the ends of the notches. The particular manner of cutt'in these transverse lines leaves at the'end 0 each blank a half notch or shoul-- der portion 7 which when the strips are laid on a roof form notches of normal width in an obvious manner.

I do not claim that the invention here described is in any sense a pioneer in this art but I have-found that it possesses certain meritorious features heretofore never used ing out through one of its lengthwise edges and an intact marginal portion between the closed ends of the notches and the opposite lengthwise edge of the-strip, said method consistin in forming in a blank a plurality of space" apart notches in rows extending lengthwise of the blank, said rows being spaced apart widthwise of the blank and corresponding in number to the number of strips to be formed from the blank, the notches of one row opening out through one lengthwise edge of the blank and severing said blank lengthwise alon lines intersecting corresponding ends of t e notches of the remaining rows of notches.

2. A method of forming roofing strips from a blank, of sufiicient size to form four shingle strips across its width, and consisting in forming longitudinally extending parallel rows of relativel "deep and narrow notches longitudinally o the length of the blank, spacing the rows of notches equidistant apart, the notches of one of said rows opening out through one edge of the blank, severing the blank along longitudinal lines intersecting the ends of the notches in each of the remaining rows and severing the blank transversely so that said transverse lines of severance intersect certain of the notches.

FREDERICK G. OVERBURY. 

